[PSUBS-MAILIST] Trustworthy Test #2

[Private via Personal_Submersibles]

Hi Scott,

Concerning the sonar, I'd suggest looking at two possibilities. The first is a separate battery for the sonar, because if it goes off the same battery as everything else you may have a case of electrical noise - in particular if you have PWM speed controllers as those I think can be noisy. Second, look at whether the through-hull for the transducer could be picking up noise. Did you connect the cable shield (mesh) through one of the pins? That would be good.

For the lights, it sounds like it might be time to get a big tube of RTV do a temporary seal from the outside, then a proper fix after Summersville. 


Best,

Alec



> On May 11, 2014, at 6:55 PM, swaters via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hey guys,
> We took Trustworthy out for another test yesterday. This time the goals were:
> *Deeper diving
> *GPS/Sonar testing
> *endurance of motor testing
> *life support testing
> *lights not leaking try two
> 
> We made three longer dives with a max of 43 feet and had a great time except viability was zero. The GPS worked flawlessly! The sonar is still having problems. I will continue to figure out the problem. Hopefully have it fixed by the West Virginia trip. I traked my max speed with the GPS at 3.2mph. After motoring for a solid mile I switched battery banks and my main motor cut out. Not sure the problem yet, but another thing to fix. Life support worked flawlessly! I originally thought I wanted to redo my life support system to a computer, but my simple design works way better than expeceted. I ran with only one scrubber and it had no problem keeping up with 2 people. I have decided to keep my system the way it is. As for my light housing leaking, yea... I am going to just make new hosuings after the West Virgina trip. All and all very sucsessful. These tests are important to work out the kinks.
> Thanks,
> Scott Waters
> 
> 
> 
> 
> Sent from my U.S. Cellular© Smartphone
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